X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/dabd1377ce769598bda630dfad548be055e2a89b..924fe7dabe68c324b6e5005bbe1c4119447867f3:/src/common/dynload.cpp?ds=sidebyside diff --git a/src/common/dynload.cpp b/src/common/dynload.cpp index 4d94741e29..5bb2496dff 100644 --- a/src/common/dynload.cpp +++ b/src/common/dynload.cpp @@ -7,10 +7,10 @@ // Created: 03/12/01 // RCS-ID: $Id$ // Copyright: (c) 2001 Ron Lee -// Licence: wxWindows license +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma implementation "dynload.h" #endif @@ -33,263 +33,42 @@ #ifndef WX_PRECOMP #include "wx/log.h" #include "wx/intl.h" + #include "wx/hash.h" + #include "wx/utils.h" #endif -#include "wx/filename.h" // for SplitPath() +#include "wx/strconv.h" #include "wx/dynload.h" #include "wx/module.h" -#if defined(__DARWIN__) -/* Porting notes: - * The dlopen port is a port from dl_next.xs by Anno Siegel. - * dl_next.xs is itself a port from dl_dlopen.xs by Paul Marquess. - * The method used here is just to supply the sun style dlopen etc. - * functions in terms of Darwin NS*. - */ -void *dlopen(const char *path, int mode /* mode is ignored */); -void *dlsym(void *handle, const char *symbol); -int dlclose(void *handle); -const char *dlerror(void); -#endif - -// ============================================================================ -// implementation -// ============================================================================ // --------------------------------------------------------------------------- -// wxDynamicLibrary +// wxPluginLibrary // --------------------------------------------------------------------------- -//FIXME: This class isn't really common at all, it should be moved into -// platform dependent files. -#if defined(__WINDOWS__) || defined(__WXPM__) || defined(__EMX__) -const wxString wxDynamicLibrary::ms_dllext( _T(".dll") ); -#elif defined(__UNIX__) -#if defined(__HPUX__) -const wxString wxDynamicLibrary::ms_dllext( _T(".sl") ); -#else -const wxString wxDynamicLibrary::ms_dllext( _T(".so") ); -#endif -#endif - -wxDllType wxDynamicLibrary::GetProgramHandle() -{ -#if defined( HAVE_DLOPEN ) && !defined(__EMX__) - return dlopen(0, RTLD_LAZY); -#elif defined (HAVE_SHL_LOAD) - return PROG_HANDLE; -#else - wxFAIL_MSG( wxT("This method is not implemented under Windows or OS/2")); - return 0; -#endif -} +wxDLImports* wxPluginLibrary::ms_classes = NULL; -bool wxDynamicLibrary::Load(wxString libname, int flags) +class wxPluginLibraryModule : public wxModule { - wxASSERT_MSG(m_handle == 0, _T("Library already loaded.")); - - // add the proper extension for the DLL ourselves unless told not to - if ( !(flags & wxDL_VERBATIM) ) - { - // and also check that the libname doesn't already have it - wxString ext; - wxFileName::SplitPath(libname, NULL, NULL, &ext); - if ( ext.empty() ) - { - libname += GetDllExt(); - } - } - -#if defined(__WXMAC__) && !defined(__DARWIN__) - FSSpec myFSSpec; - Ptr myMainAddr; - Str255 myErrName; - - wxMacFilename2FSSpec( libname , &myFSSpec ); - - if( GetDiskFragment( &myFSSpec, - 0, - kCFragGoesToEOF, - "\p", - kPrivateCFragCopy, - &m_handle, - &myMainAddr, - myErrName ) != noErr ) - { - p2cstr( myErrName ); - wxLogSysError( _("Failed to load shared library '%s' Error '%s'"), - libname.c_str(), - (char*)myErrName ); - m_handle = 0; - } - -#elif defined(__WXPM__) || defined(__EMX__) - char err[256] = ""; - DosLoadModule(err, sizeof(err), libname.c_str(), &m_handle); - -#elif defined(HAVE_DLOPEN) || defined(__DARWIN__) - -#if defined(__VMS) || defined(__DARWIN__) - m_handle = dlopen(libname.c_str(), 0); // The second parameter is ignored -#else - int rtldFlags = 0; - - if( flags & wxDL_LAZY ) - { - wxASSERT_MSG( (flags & wxDL_NOW) == 0, - _T("wxDL_LAZY and wxDL_NOW are mutually exclusive.") ); - rtldFlags |= RTLD_LAZY; - } - else if( flags & wxDL_NOW ) - { - rtldFlags |= RTLD_NOW; - } - if( flags & wxDL_GLOBAL ) - { -#ifdef __osf__ - wxLogDebug(_T("WARNING: RTLD_GLOBAL is not a supported on this platform.")); -#endif - rtldFlags |= RTLD_GLOBAL; - } - - m_handle = dlopen(libname.c_str(), rtldFlags); -#endif // __VMS || __DARWIN__ - -#elif defined(HAVE_SHL_LOAD) - int shlFlags = 0; - - if( flags & wxDL_LAZY ) - { - wxASSERT_MSG( (flags & wxDL_NOW) == 0, - _T("wxDL_LAZY and wxDL_NOW are mutually exclusive.") ); - shlFlags |= BIND_DEFERRED; - } - else if( flags & wxDL_NOW ) - { - shlFlags |= BIND_IMMEDIATE; - } - m_handle = shl_load(libname.c_str(), BIND_DEFERRED, 0); - -#elif defined(__WINDOWS__) - m_handle = ::LoadLibrary(libname.c_str()); - -#else -#error "runtime shared lib support not implemented" -#endif +public: + wxPluginLibraryModule() { } - if ( m_handle == 0 ) + // TODO: create ms_classes on demand, why always preallocate it? + virtual bool OnInit() { - wxString msg(_("Failed to load shared library '%s'")); -#if defined(HAVE_DLERROR) && !defined(__EMX__) - const wxChar *err = dlerror(); - if( err ) - wxLogError( msg, err ); -#else - wxLogSysError( msg, libname.c_str() ); -#endif + wxPluginLibrary::ms_classes = new wxDLImports; + wxPluginManager::CreateManifest(); + return TRUE; } - return IsLoaded(); -} - -void wxDynamicLibrary::Unload() -{ - if( IsLoaded() ) + virtual void OnExit() { -#if defined(__WXPM__) || defined(__EMX__) - DosFreeModule( m_handle ); -#elif defined(HAVE_DLOPEN) || defined(__DARWIN__) - dlclose( m_handle ); -#elif defined(HAVE_SHL_LOAD) - shl_unload( m_handle ); -#elif defined(__WINDOWS__) - ::FreeLibrary( m_handle ); -#elif defined(__WXMAC__) && !defined(__DARWIN__) - CloseConnection( (CFragConnectionID*) &m_handle ); -#else -#error "runtime shared lib support not implemented" -#endif - m_handle = 0; + delete wxPluginLibrary::ms_classes; + wxPluginLibrary::ms_classes = NULL; + wxPluginManager::ClearManifest(); } -} - -void *wxDynamicLibrary::GetSymbol(const wxString &name, bool *success) const -{ - wxCHECK_MSG( IsLoaded(), NULL, - _T("Can't load symbol from unloaded library") ); - - bool failed = FALSE; - void *symbol = 0; - -#if defined(__WXMAC__) && !defined(__DARWIN__) - Ptr symAddress; - CFragSymbolClass symClass; - Str255 symName; -#if TARGET_CARBON - c2pstrcpy( (StringPtr) symName, name ); -#else - strcpy( (char *)symName, name ); - c2pstr( (char *)symName ); -#endif - if( FindSymbol( dllHandle, symName, &symAddress, &symClass ) == noErr ) - symbol = (void *)symAddress; - -#elif defined(__WXPM__) || defined(__EMX__) - DosQueryProcAddr( m_handle, 1L, name.c_str(), (PFN*)symbol ); - -#elif defined(HAVE_DLOPEN) || defined(__DARWIN__) - symbol = dlsym( m_handle, name.c_str() ); - -#elif defined(HAVE_SHL_LOAD) - if( shl_findsym( &m_handle, name.c_str(), TYPE_UNDEFINED, &symbol ) != 0 ) - symbol = 0; - -#elif defined(__WINDOWS__) - symbol = (void*) ::GetProcAddress( m_handle, name.mb_str() ); - -#else -#error "runtime shared lib support not implemented" -#endif - - if ( !symbol ) - { - wxString msg(_("wxDynamicLibrary failed to GetSymbol '%s'")); -#if defined(HAVE_DLERROR) && !defined(__EMX__) - const wxChar *err = dlerror(); - if( err ) - { - failed = TRUE; - wxLogError( msg, err ); - } -#else - failed = TRUE; - wxLogSysError(_("Couldn't find symbol '%s' in a dynamic library"), - name.c_str()); -#endif - } - if( success ) - *success = !failed; - - return symbol; -} - - -// --------------------------------------------------------------------------- -// wxPluginLibrary -// --------------------------------------------------------------------------- - - -wxDLImports* wxPluginLibrary::ms_classes = NULL; - -class wxPluginLibraryModule : public wxModule -{ -public: - wxPluginLibraryModule() {} - bool OnInit() { wxPluginLibrary::ms_classes = new wxDLImports(wxKEY_STRING); return TRUE; } - void OnExit() { delete wxPluginLibrary::ms_classes; wxPluginLibrary::ms_classes = NULL; - wxPluginManager::ClearManifest(); } private: DECLARE_DYNAMIC_CLASS(wxPluginLibraryModule ) @@ -308,11 +87,14 @@ wxPluginLibrary::wxPluginLibrary(const wxString &libname, int flags) if( m_handle != 0 ) { - UpdateClassInfo(); + UpdateClasses(); RegisterModules(); } else - --m_linkcount; // Flag us for deletion + { + // Flag us for deletion + --m_linkcount; + } } wxPluginLibrary::~wxPluginLibrary() @@ -320,18 +102,30 @@ wxPluginLibrary::~wxPluginLibrary() if( m_handle != 0 ) { UnregisterModules(); - RestoreClassInfo(); + RestoreClasses(); } } +wxPluginLibrary *wxPluginLibrary::RefLib() +{ + wxCHECK_MSG( m_linkcount > 0, NULL, + _T("Library had been already deleted!") ); + + ++m_linkcount; + return this; +} + bool wxPluginLibrary::UnrefLib() { - wxASSERT_MSG( m_objcount == 0, _T("Library unloaded before all objects were destroyed") ); - if( m_linkcount == 0 || --m_linkcount == 0 ) + wxASSERT_MSG( m_objcount == 0, + _T("Library unloaded before all objects were destroyed") ); + + if ( m_linkcount == 0 || --m_linkcount == 0 ) { delete this; return TRUE; } + return FALSE; } @@ -339,64 +133,28 @@ bool wxPluginLibrary::UnrefLib() // Private methods // ------------------------ -void wxPluginLibrary::UpdateClassInfo() +void wxPluginLibrary::UpdateClasses() { - wxClassInfo *info; - wxHashTable *t = wxClassInfo::sm_classTable; - - // FIXME: Below is simply a cut and paste specialisation of - // wxClassInfo::InitializeClasses. Once this stabilises, - // the two should probably be merged. - // - // Actually it's becoming questionable whether we should merge - // this info with the main ClassInfo tables since we can nearly - // handle this completely internally now and it does expose - // certain (minimal % user_stupidy) risks. - - for(info = m_after; info != m_before; info = info->m_next) + for (wxClassInfo *info = m_after; info != m_before; info = info->m_next) { if( info->m_className ) { - if( t->Get(info->m_className) == 0 ) - t->Put(info->m_className, (wxObject *)info); - // Hash all the class names into a local table too so // we can quickly find the entry they correspond to. - - if( ms_classes->Get(info->m_className) == 0 ) - ms_classes->Put(info->m_className, (wxObject *) this); + (*ms_classes)[info->m_className] = this; } } - - for(info = m_after; info != m_before; info = info->m_next) - { - if( info->m_baseClassName1 ) - info->m_baseInfo1 = (wxClassInfo *)t->Get(info->m_baseClassName1); - if( info->m_baseClassName2 ) - info->m_baseInfo2 = (wxClassInfo *)t->Get(info->m_baseClassName2); - } } -void wxPluginLibrary::RestoreClassInfo() +void wxPluginLibrary::RestoreClasses() { - wxClassInfo *info; + // Check if there is a need to restore classes. + if (!ms_classes) + return; - for(info = m_after; info != m_before; info = info->m_next) - { - wxClassInfo::sm_classTable->Delete(info->m_className); - ms_classes->Delete(info->m_className); - } - - if( wxClassInfo::sm_first == m_after ) - wxClassInfo::sm_first = m_before; - else + for(wxClassInfo *info = m_after; info != m_before; info = info->m_next) { - info = wxClassInfo::sm_first; - while( info->m_next && info->m_next != m_after ) info = info->m_next; - - wxASSERT_MSG( info, _T("ClassInfo from wxPluginLibrary not found on purge")) - - info->m_next = m_before; + ms_classes->erase(ms_classes->find(info->m_className)); } } @@ -413,7 +171,7 @@ void wxPluginLibrary::RegisterModules() wxASSERT_MSG( m_linkcount == 1, _T("RegisterModules should only be called for the first load") ); - for(wxClassInfo *info = m_after; info != m_before; info = info->m_next) + for ( wxClassInfo *info = m_after; info != m_before; info = info->m_next) { if( info->IsKindOf(CLASSINFO(wxModule)) ) { @@ -421,16 +179,18 @@ void wxPluginLibrary::RegisterModules() wxASSERT_MSG( m, _T("wxDynamicCast of wxModule failed") ); - m_wxmodules.Append(m); + m_wxmodules.push_back(m); wxModule::RegisterModule(m); } } // FIXME: Likewise this is (well was) very similar to InitializeModules() - for(wxModuleList::Node *node = m_wxmodules.GetFirst(); node; node->GetNext()) + for ( wxModuleList::iterator it = m_wxmodules.begin(); + it != m_wxmodules.end(); + ++it) { - if( !node->GetData()->Init() ) + if( !(*it)->Init() ) { wxLogDebug(_T("wxModule::Init() failed for wxPluginLibrary")); @@ -441,13 +201,14 @@ void wxPluginLibrary::RegisterModules() // let the dtor Exit the rest on shutdown, (which we'll initiate // shortly). - wxModuleList::Node *oldNode = 0; + wxModuleList::iterator oldNode = m_wxmodules.end(); do { - node = node->GetNext(); - delete oldNode; - wxModule::UnregisterModule( node->GetData() ); - oldNode = node; - } while( node ); + ++it; + if( oldNode != m_wxmodules.end() ) + m_wxmodules.erase(oldNode); + wxModule::UnregisterModule( *it ); + oldNode = it; + } while( it != m_wxmodules.end() ); --m_linkcount; // Flag us for deletion break; @@ -457,20 +218,21 @@ void wxPluginLibrary::RegisterModules() void wxPluginLibrary::UnregisterModules() { - wxModuleList::Node *node; + wxModuleList::iterator it; - for(node = m_wxmodules.GetFirst(); node; node->GetNext()) - node->GetData()->Exit(); + for ( it = m_wxmodules.begin(); it != m_wxmodules.end(); ++it ) + (*it)->Exit(); - for(node = m_wxmodules.GetFirst(); node; node->GetNext()) - wxModule::UnregisterModule( node->GetData() ); + for ( it = m_wxmodules.begin(); it != m_wxmodules.end(); ++it ) + wxModule::UnregisterModule( *it ); - m_wxmodules.DeleteContents(TRUE); + // NB: content of the list was deleted by UnregisterModule calls above: + m_wxmodules.clear(); } // --------------------------------------------------------------------------- -// wxPluginLibrary +// wxPluginManager // --------------------------------------------------------------------------- wxDLManifest* wxPluginManager::ms_manifest = NULL; @@ -479,64 +241,96 @@ wxDLManifest* wxPluginManager::ms_manifest = NULL; // Static accessors // ------------------------ -wxPluginLibrary *wxPluginManager::LoadLibrary(const wxString &libname, int flags) +wxPluginLibrary * +wxPluginManager::LoadLibrary(const wxString &libname, int flags) { wxString realname(libname); if( !(flags & wxDL_VERBATIM) ) realname += wxDynamicLibrary::GetDllExt(); - wxPluginLibrary *entry = (wxPluginLibrary*) ms_manifest->Get(realname); + wxPluginLibrary *entry; - if( entry != 0 ) + if ( flags & wxDL_NOSHARE ) { + entry = NULL; + } + else + { + entry = FindByName(realname); + } + + if ( entry ) + { + wxLogTrace(_T("dll"), + _T("LoadLibrary(%s): already loaded."), realname.c_str()); + entry->RefLib(); } else { entry = new wxPluginLibrary( libname, flags ); - if( entry->IsLoaded() ) + if ( entry->IsLoaded() ) { - ms_manifest->Put(realname, (wxObject*) entry); + (*ms_manifest)[realname] = entry; + + wxLogTrace(_T("dll"), + _T("LoadLibrary(%s): loaded ok."), realname.c_str()); + } else { - wxCHECK_MSG( entry->UnrefLib(), 0, - _T("Currently linked library is, ..not loaded??") ); - entry = 0; + wxLogTrace(_T("dll"), + _T("LoadLibrary(%s): failed to load."), realname.c_str()); + + // we have created entry just above + if ( !entry->UnrefLib() ) + { + // ... so UnrefLib() is supposed to delete it + wxFAIL_MSG( _T("Currently linked library is not loaded?") ); + } + + entry = NULL; } } + return entry; } -bool wxPluginManager::UnloadLibrary(const wxString &libname) +bool wxPluginManager::UnloadLibrary(const wxString& libname) { - wxPluginLibrary *entry = (wxPluginLibrary*) ms_manifest->Get(libname); + wxString realname = libname; - if( !entry ) - entry = (wxPluginLibrary*) ms_manifest->Get(libname + wxDynamicLibrary::GetDllExt()); + wxPluginLibrary *entry = FindByName(realname); - if( entry ) - return entry->UnrefLib(); + if ( !entry ) + { + realname += wxDynamicLibrary::GetDllExt(); - wxLogDebug(_T("Attempt to Unlink library '%s' (which is not linked)."), libname.c_str()); - return FALSE; -} + entry = FindByName(realname); + } -#if WXWIN_COMPATIBILITY_2_2 -wxPluginLibrary *wxPluginManager::GetObjectFromHandle(wxDllType handle) -{ - wxNode *node; - ms_manifest->BeginFind(); + if ( !entry ) + { + wxLogDebug(_T("Attempt to unload library '%s' which is not loaded."), + libname.c_str()); - for(node = ms_manifest->Next(); node; node = ms_manifest->Next()) - if( ((wxPluginLibrary*)node->GetData())->GetLibHandle() == handle ) - return (wxPluginLibrary*)node->GetData(); + return FALSE; + } - return 0; + wxLogTrace(_T("dll"), _T("UnloadLibrary(%s)"), realname.c_str()); + + if ( !entry->UnrefLib() ) + { + // not really unloaded yet + return FALSE; + } + + ms_manifest->erase(ms_manifest->find(realname)); + + return TRUE; } -#endif // ------------------------ // Class implementation @@ -545,53 +339,249 @@ wxPluginLibrary *wxPluginManager::GetObjectFromHandle(wxDllType handle) bool wxPluginManager::Load(const wxString &libname, int flags) { m_entry = wxPluginManager::LoadLibrary(libname, flags); + return IsLoaded(); } void wxPluginManager::Unload() { - wxNode *node; - ms_manifest->BeginFind(); + wxCHECK_RET( m_entry, _T("unloading an invalid wxPluginManager?") ); - // It's either this or store the name of the lib just to do this. - - for(node = ms_manifest->Next(); node; node = ms_manifest->Next()) - if( (wxPluginLibrary*)node->GetData() == m_entry ) + for ( wxDLManifest::iterator i = ms_manifest->begin(); + i != ms_manifest->end(); + ++i ) + { + if ( i->second == m_entry ) + { + ms_manifest->erase(i); break; + } + } + + m_entry->UnrefLib(); + + m_entry = NULL; +} + - if( m_entry && m_entry->UnrefLib() ) + +#if WXWIN_COMPATIBILITY_2_2 + +wxPluginLibrary *wxPluginManager::GetObjectFromHandle(wxDllType handle) +{ + for ( wxDLManifest::iterator i = ms_manifest->begin(); + i != ms_manifest->end(); + ++i ) { - delete node; - m_entry = 0; + wxPluginLibrary * const lib = i->second; + + if ( lib->GetLibHandle() == handle ) + return lib; } + + return NULL; } // --------------------------------------------------------------------------- // wxDllLoader (all these methods are static) // --------------------------------------------------------------------------- -#if WXWIN_COMPATIBILITY_2_2 -wxDllType wxDllLoader::LoadLibrary(const wxString &name) +wxDllType wxDllLoader::LoadLibrary(const wxString &name, bool *success) { - wxPluginLibrary *p = wxPluginManager::LoadLibrary(name, wxDL_DEFAULT | wxDL_VERBATIM); - return p->GetLibHandle(); + wxPluginLibrary *p = wxPluginManager::LoadLibrary + ( + name, + wxDL_DEFAULT | wxDL_VERBATIM | wxDL_NOSHARE + ); + + if ( success ) + *success = p != NULL; + + return p ? p->GetLibHandle() : 0; } void wxDllLoader::UnloadLibrary(wxDllType handle) { wxPluginLibrary *p = wxPluginManager::GetObjectFromHandle(handle); + + wxCHECK_RET( p, _T("Unloading a library not loaded with wxDllLoader?") ); + p->UnrefLib(); } -void *wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name, bool *success) +void * +wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name, bool *success) { wxPluginLibrary *p = wxPluginManager::GetObjectFromHandle(dllHandle); + + if ( !p ) + { + wxFAIL_MSG( _T("Using a library not loaded with wxDllLoader?") ); + + if ( success ) + *success = FALSE; + + return NULL; + } + return p->GetSymbol(name, success); } + +// --------------------------------------------------------------------------- +// Global variables +// --------------------------------------------------------------------------- + +wxLibraries wxTheLibraries; + +// ============================================================================ +// implementation +// ============================================================================ + +// construct the full name from the base shared object name: adds a .dll +// suffix under Windows or .so under Unix +static wxString ConstructLibraryName(const wxString& basename) +{ + wxString fullname; + fullname << basename << wxDllLoader::GetDllExt(); + + return fullname; +} + +// --------------------------------------------------------------------------- +// wxLibrary (one instance per dynamic library) +// --------------------------------------------------------------------------- + +wxLibrary::wxLibrary(wxDllType handle) +{ + typedef wxClassInfo *(*t_get_first)(void); + t_get_first get_first; + + m_handle = handle; + + // Some system may use a local heap for library. + get_first = (t_get_first)GetSymbol(_T("wxGetClassFirst")); + // It is a wxWidgets DLL. + if (get_first) + PrepareClasses(get_first()); +} + +wxLibrary::~wxLibrary() +{ + if ( m_handle ) + { + wxDllLoader::UnloadLibrary(m_handle); + } +} + +wxObject *wxLibrary::CreateObject(const wxString& name) +{ + wxClassInfo *info = (wxClassInfo *)classTable.Get(name); + + if (!info) + return NULL; + + return info->CreateObject(); +} + +void wxLibrary::PrepareClasses(wxClassInfo *first) +{ + // Index all class infos by their class name + wxClassInfo *info = first; + while (info) + { + if (info->m_className) + classTable.Put(info->m_className, (wxObject *)info); + info = info->m_next; + } + +#if !wxUSE_EXTENDED_RTTI + // Set base pointers for each wxClassInfo + info = first; + while (info) + { + if (info->GetBaseClassName1()) + info->m_baseInfo1 = (wxClassInfo *)classTable.Get(info->GetBaseClassName1()); + if (info->GetBaseClassName2()) + info->m_baseInfo2 = (wxClassInfo *)classTable.Get(info->GetBaseClassName2()); + info = info->m_next; + } +#endif +} + +void *wxLibrary::GetSymbol(const wxString& symbname) +{ + return wxDllLoader::GetSymbol(m_handle, symbname); +} + + +// --------------------------------------------------------------------------- +// wxLibraries (only one instance should normally exist) +// --------------------------------------------------------------------------- + +wxLibraries::wxLibraries():m_loaded(wxKEY_STRING) +{ +} + +wxLibraries::~wxLibraries() +{ + wxNode *node = m_loaded.First(); + + while (node) { + wxLibrary *lib = (wxLibrary *)node->Data(); + delete lib; + + node = node->Next(); + } +} + +wxLibrary *wxLibraries::LoadLibrary(const wxString& name) +{ + wxLibrary *lib; + wxClassInfo *old_sm_first; + wxNode *node = m_loaded.Find(name.GetData()); + + if (node != NULL) + return ((wxLibrary *)node->Data()); + + // If DLL shares data, this is necessary. + old_sm_first = wxClassInfo::sm_first; + wxClassInfo::sm_first = NULL; + + wxString libname = ConstructLibraryName(name); + + bool success = FALSE; + wxDllType handle = wxDllLoader::LoadLibrary(libname, &success); + if(success) + { + lib = new wxLibrary(handle); + wxClassInfo::sm_first = old_sm_first; + + m_loaded.Append(name.GetData(), lib); + } + else + lib = NULL; + return lib; +} + +wxObject *wxLibraries::CreateObject(const wxString& path) +{ + wxNode *node = m_loaded.First(); + wxObject *obj; + + while (node) { + obj = ((wxLibrary *)node->Data())->CreateObject(path); + if (obj) + return obj; + + node = node->Next(); + } + return NULL; +} + #endif // WXWIN_COMPATIBILITY_2_2 + #endif // wxUSE_DYNAMIC_LOADER -// vi:sts=4:sw=4:et